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US 8,777,455 B2Granted
Retroreflective, multi-element design for a solid state directional lamp
AssigneeCree, Inc.
InventorsPaul Pickard, Nicholas W. Medendorp, Jr.
Life of this patent
Estimating the term…
Abstract
A solid state directional lamp is disclosed. The lamp includes a housing and a solid state light emitter. The housing defines an interior region and an air passageway, the air passageway passing through the housing and the interior region. The solid state light emitter is positioned adjacent to a perimeter of the air passageway. The air passageway is configured to provide cooling to the lamp when the sold state light emitter is energized.
Claims28
A lamp comprising:
- a housing defining an interior region and an air passageway, the air passageway passing through the housing and the interior region;
- a solid state light emitter positioned adjacent to a perimeter of the air passageway, where the solid state light emitter is positioned to direct light rays into the interior region of the housing;
- and
- a reflector positioned in the interior region of the housing, the reflector defining an aperture configured to allow the air passageway of the housing to pass through the reflector;
- wherein the air passageway is configured to provide an airflow that cools the lamp when the solid state light emitter is energized.
2 more elements
A lamp comprising:
- a housing defining an interior region and an air passageway, the air passageway passing through the housing and the interior region;
- a solid state light emitter positioned adjacent to a perimeter of the air passageway, where the solid state light emitter is positioned to direct light rays into the interior region of the housing;
- and
- a lens positioned to cover at least the interior region of the housing, the lens defining an aperture in communication with the air passageway of the housing;
- wherein the air passageway is configured to provide an airflow that cools the lamp when the solid state light emitter is energized.
2 more elements
An assembly for a lamp, the assembly comprising:
- a housing defining an interior region and an air passageway passing through the housing and the interior region, wherein the air passageway is configured to provide an airflow that cools the lamp when a solid state light emitter positioned adjacent to a perimeter of the air passageway is energized and wherein the housing further defines a plurality of fins within the air passageway that is configured to direct the airflow through the air passageway;
- and
- a reflector positioned in the interior region of the housing, the reflector defining an aperture configured to allow the air passageway of the housing to pass through the reflector.
A lamp comprising:
- a housing defining an air passageway and a plurality of fins on an exterior of the housing that is positioned around the air passageway, wherein the air passageway is configured to provide an airflow through the housing that cools the lamp and wherein the plurality of fins positioned on the exterior of the housing is configured to act as a heat sink;
- a solid state light emitter positioned adjacent to a perimeter of the air passageway, the solid state light emitter positioned to direct light rays into an interior of the lamp;
- a metal heat spreader positioned to conduct heat generated by the solid state light emitter when energized, the metal heat spreader defining an aperture in communication with the air passageway that is configured to allow the airflow to flow through the metal heat spreader;
- and
- a reflector positioned in the interior region of the housing, the reflector defining an aperture configured to allow the air passageway of the housing to pass through the reflector.
2 more elements
Dependencies are inferred from the claim text.